# Electromag vs StarPromenadeLight

The clearest difference is review sentiment: StarPromenadeLight at 100% against Electromag's 45%. StarPromenadeLight also leads on price (Free vs $1.99) and iOS requirement (13.5 vs 18.6). On update cadence, ads, in-app purchases and device support there is nothing between them.

StarPromenadeLight is free to download; Electromag costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Electromag ships an update every 9 months, StarPromenadeLight every 13 months. The most recent releases landed on September 29, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Electromag | StarPromenadeLight |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/electromag/id404649255/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 45.5% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 13 months |
| Monetization | Paid | **Free** |
| Size | 20 MB | 2 MB |
| Requires iOS | 18.6 | **13.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Xavier Daxhelet](https://appshunter.io/developer/339056993) | [Takao Akatsu](https://appshunter.io/developer/1530946331) |

## What reviewers say

### Electromag

[App page](https://appshunter.io/ios/app/electromag/id404649255)

Explore fundamental concepts of electromagnetism through interactive animations and detailed explanations. This app supports high school and university courses, covering electrostatics, electric current, magnetism, and Maxwell's equations with visual aids.

**Highlights:** Basic equations memorandum, 20+ electromagnetism animations, 3D animations, Covers electrostatics, electric current, magnetism, and electromagnetism, Includes physical constants, Classroom projection support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### StarPromenadeLight

[App page](https://appshunter.io/ios/app/starpromenadelight/id1564202748)

Experience realistic space travel with a simulator that uses extensive star catalog data. Explore the universe at incredible speeds, witnessing familiar constellations transform into new shapes. Choose your destination and embark on an interstellar journey.

**Highlights:** Realistic space travel simulation, Extensive stellar position data, High-speed interstellar flight, Transforming constellation visuals, Selectable star destinations, Adjustable flight speed

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Electromag free?

Electromag costs $1.99, with no in-app purchases.

### Is StarPromenadeLight free?

StarPromenadeLight is free to download, with no in-app purchases.

### Do Electromag or StarPromenadeLight have ads?

Neither Electromag nor StarPromenadeLight shows ads.

### Which is updated more often, Electromag or StarPromenadeLight?

Electromag ships an update every 9 months, and StarPromenadeLight every 13 months. Most recently, Electromag was updated on September 29, 2026 and StarPromenadeLight on October 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*